US 12,452,535 B2
Lens drive apparatus
Tongming Xu, Changzhou (CN); Suohe Wei, Changzhou (CN); and Limei Zhao, Changzhou (CN)
Assigned to Changzhou AAC Raytech Optronics Co., Ltd., Changzhou (CN)
Filed by Changzhou AAC Raytech Optronics Co., Ltd., Jiangsu (CN)
Filed on May 31, 2023, as Appl. No. 18/327,035.
Application 18/327,035 is a continuation of application No. PCT/CN2023/086004, filed on Apr. 3, 2023.
Claims priority of application No. 202223125233.3 (CN), filed on Nov. 23, 2022.
Prior Publication US 2024/0171861 A1, May 23, 2024
Int. Cl. H04N 23/68 (2023.01); H04N 23/54 (2023.01)
CPC H04N 23/687 (2023.01) [H04N 23/54 (2023.01)] 8 Claims
OG exemplary drawing
 
1. A lens drive apparatus, comprising a base, a housing fixed to the base to form a receiving cavity, a support frame supported on a top side of the base and accommodated in the receiving cavity, a lens barrel elastically connected in the support frame, an anti-shake drive assembly arranged on the base, a magnetic circuit assembly arranged on the support frame, and a focusing drive assembly arranged on the lens barrel,
wherein the support frame comprises two opposite and parallel first enclosing walls and two opposite and parallel second enclosing walls, an extension direction of the two first enclosing walls and an extension direction of the two second enclosing walls being perpendicular to each other, and the magnetic circuit assembly comprises a first magnetic group fixed to one of the two first enclosing walls, a weight fixed to the other one of the two first enclosing walls, and two second magnetic groups respectively fixed to the two second enclosing walls,
wherein the anti-shake drive assembly comprises three anti-shake coils fixed to the base and respectively spaced apart from the first magnetic group and the two second magnetic groups, and
wherein the focusing drive assembly comprises two drive coils fixed to an outer side of the lens barrel and respectively spaced apart from inner sides of the two second magnetic groups;
wherein the first magnetic group comprises a first magnet, an N pole of the first magnet facing an inner side of the support frame, and
the two second magnetic groups each comprises a second magnet and a third magnet fixedly stacked in a direction of an optical axis an N pole of the second magnet facing the inner side of the support frame, and an S pole of the third magnet facing the inner side of the support frame;
wherein the magnetic circuit assembly further comprises a magnetically conductive ring embedded in the support frame and surrounding an outer side of the lens barrel, and the first magnet, the second magnet, and the third magnet all at least partially overlap with the magnetically conductive ring in a radial direction.